travel为什么要变成travelling?People travelling on business can go to the Internet cafe and contactPeople___on business can go to the Internet café and contact the office if they need to send a report or get information.这里为什么要用tra

personal traving中travel为什么要加ing啊 I would like to travel.为什么要填would? 什么是travel document?为什么要办理travel document?为何不办理Visitor visa?那如何申请?要几耐时间? Bttey wants to be a singer and travel around the world 为什么travel不要加s要原因,具体一点 travel travel travel Travel travel travel 蝌蚪为什么要变成青蛙 travelling broadens the mind与few would dispute that travel broadens the mind为什么要用travelling,它是动名词?为什么第二句用travel? travel的用法travel to 某地,比如去上海旅游就是travel to Shanghai 还是travel Shanghai?还有啊,travel world the world为什么就不加to了呢? My dream is to travel around the world when l grow up.为什么要加to?可不可以去掉to,travel加ing? travel为什么要变成travelling?People travelling on business can go to the Internet cafe and contactPeople___on business can go to the Internet café and contact the office if they need to send a report or get information.这里为什么要用tra when did she ___ the USA?为什么不能选travel,而要用tour How about traveling to Xinjiang this summer vacation?为什么travel要加ing I like to travel on the coach为什么要用 on 用 by 行不行?